🚀 go-pugleaf

>>>>> On 14 Dec 1992 23:17:18 GMT,
>>>>> In message <1gj4luINNp7g@gap.caltech.edu>,
>>>>> walter@cithe501.cithep.caltech.edu (Chris Walter) wrote:

Chris> I would like to call Fortran routines from within my C++
Chris> programs.  Has anyone managed to modify cfortran.h(a header
Chris> file which allows one to easily call fortran routines within C)
Chris> to work with gcc?  I contacted the author and he isn't aware of
Chris> anyone who has done it.  I thought this might work:

Chris> extern "C" {
Chris> #include "/users/walter/cfortran/cfortran.h"
Chris> #define RANNOR(A,B) CCALLSFSUB2(RANNOR,rannor,FLOAT,FLOAT,A,B)
Chris> }

Chris> but no luck. The linker complains it can't find 

Chris> rannor__Fp(some other stuff)

Chris> so clearly the compiler doesn't know rannor is foreign....

It looks like there is no prototype for "rannor" in "cfortran.h", so
C++ is assuming "C++" linkage the first time it sees a reference to
"rannor".

For C++ to know that "rannor" has "C" linkage, a prototype for it
*must* exist in "cfortran.h".

Try adding a prototype to "cfortran.h" and see if that helps.